| Citation | IUCN, 2011 IUCN Red List of Threatened Species. Version 2011.2. IUCN 2011. IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded in November 2011. |
| Ref. | 89450 IUCN, 2011 |
| Page | |
| Named Used as Valid | Biarctus sordidus |
| Plaats | |
| Verspreiding |